refactor(core): Improve code readability and structure

- Format code uniformly, applying consistent indentation and spacing
- Restructure enum, function, and match-case formatting for clarity
- Remove redundant `defaults` from CI workflows

.github/workflows/release.yml

@@ -12,9 +12,6 @@ jobs:
   docs:
     name: Build and validate documentation
     runs-on: ubuntu-latest
-    defaults:
-      run:
-        working-directory: crates/muxox
     strategy:
       fail-fast: false
       matrix:
@@ -70,14 +67,11 @@ jobs:
     name: Test before release
     runs-on: ubuntu-latest
     needs: docs
-    defaults:
-      run:
-        working-directory: crates/muxox
     strategy:
       fail-fast: false
       matrix:
         include:
-          - name: default (native-tls)
+          - name: default
             features: ""
             no-default-features: false
 
@@ -129,9 +123,6 @@ jobs:
     permissions:
       id-token: write # Required for OIDC token exchange https://crates.io/docs/trusted-publishing
     needs: test
-    defaults:
-      run:
-        working-directory: crates/muxox
     steps:
       - name: Checkout
         uses: actions/checkout@v4